Insecticide and low food quality treatments reduce health and pollination services of two key pollinator taxa DOI Creative Commons
Markus Birkenbach, Florian Straub,

Paul Weihermüller

et al.

Journal of Applied Ecology, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 23, 2024

Abstract Pesticides and the lack of floral resources are key drivers insect decline in agricultural areas. Both land‐use stressors can have a variety synergistic sublethal effects on pollinators, affecting their health foraging behaviour. Pollinating insects include species with vastly different life histories, giving them potentially vulnerability resilience to stressors. However, most research has generally focused bees. Here, we contrast nutritional stress pesticide use social bumblebees solitary hoverflies. We experimentally tested neonicotinoid acetamiprid low‐quality food traits Bombus terrestris workers Episyrphus balteatus adults (ovarian development, body size colony development or survival). The behaviour treated pollinators was recorded semi‐field setup and, for B. , measured pollen amount surface deposited stigmata after single visit. affected bumblebee health. Additionally, insecticide‐treated showed increased flower handling times flight durations, while reduced stigmata. Syrphids were mostly by food, which decreased survival probability changed Furthermore, found an interactive effect between two stressors, reducing E. ovary development. Synthesis applications . Insecticide fitness both syrphid flies, possibly pollinator populations under natural conditions. Especially bumblebees, long‐term exposure led reduction provision pollination services, changing transfer. differences groups, showing that results gained from groups like bees should not be extrapolated all pollinators. Interactive indicate potential buffering high‐quality against other highlight importance considering synergies multiple risk assessments. This further emphasizes relevance such as wild strips areas conserve services.

Language: Английский

Winners and losers at enhanced urban roadsides: Trait-based structuring of wild bee communities at local and landscape scale DOI Creative Commons
Simon Dietzel, Sandra Rojas‐Botero,

Anja Dichtl

et al.

Biological Conservation, Journal Year: 2024, Volume and Issue: 291, P. 110480 - 110480

Published: Feb. 7, 2024

Pervasive urbanization contributes to biodiversity declines globally, and with urbanization, road densities increase, amplifying habitat degradation landscape homogenization. However, as a major part of urban green space, roadside vegetation permeates the fabric and, if enhanced, can be used support insects, such wild bees. To analyze local landscape-scale effects enhanced roadsides on bee communities identify traits affected by filtering, we established 78 wildflower patches native seed mixture along five roads in Munich (S Germany). Species-poor regular management were control. During three-year experiment, sampled bees pan traps, monitored vegetation, analyzed diversity perimeter–area ratio space within radius 500 m. We gathered information morphological, behavioral, phenological, foraging calculated their abundance, species richness functional dispersion. Wild dispersion increased diversity. Functional was positively correlated distance from city center, indicating trait-based filtering. A fourth corner analysis revealed that small, short-lived, univoltine disadvantaged at roadsides. While discriminated areas high diversity, large prevailed outskirts, solitary associated edges. conclude contribute identifying groups help draw recommendations for effective conservation.

Language: Английский

Citations

2
Standardized transect walks outperform pan traps in assessing wild bee community in a Mediterranean protected area (Asinara National Park, Italy) DOI Creative Commons

Matteo Lezzeri,

Vanessa Lozano, Giuseppe Brundu

et al.

Biodiversity and Conservation, Journal Year: 2024, Volume and Issue: 33(8-9), P. 1 - 16

Published: May 8, 2024

Abstract The decline of pollinator insects in various parts the world has increased interest studies on bee sampling. Because management and conservation policies depend data representing their communities, knowledge systematic bias sampling methods relation to surrounding habitat is fundamental. This study examined performance standardized transect walks colored pan traps considering differences species richness, diversity, composition, potential due a different availability floral sources throughout seasons. was conducted minor outlying island (Asinara, Italy), natural park characterized by prevalence or semi-natural habitats an Oceanic Pluviseasonal Mediterranean bioclimate. We found that trap reflected communities based taxonomic families, genera, species. In general, method captured more varied samples than traps, despite significantly lower number individuals transects. Moreover, bees as abundance decreased, whereas transects showed greater abundance, diversity with increasing resource availability. addition, 18 out 68 observed total were caught exclusively especially July–October, when catches decreased substantial bloom reduction. Therefore, alternating two according season (i.e., late winter-spring summer-autumn) might be most suitable trade-off obtain better representation community limiting efforts negative impact fauna.

Language: Английский

Citations

2
Fruit set is moderately dependent on insect pollinators in strawberry and is limited by the availability of pollen under natural open conditions DOI

C. M. Menzel

The Journal of Horticultural Science and Biotechnology, Journal Year: 2023, Volume and Issue: 98(6), P. 685 - 714

Published: June 14, 2023

ABSTRACTABSTRACTModern strawberry (Fragaria ×ananassa Duch.) cultivars are hermaphrodite and have fertile flowers, with the anthers releasing viable pollen. Cultivars self-compatible do not require cross-pollination. Studies supporting managed or wild insects based on a few reports there problems methods used to assess pollination. This review examined role of pollination in strawberry. The mean (± s.d. standard deviation) pollinator dependence (PD) for yield (self-pollination versus open- insect-assisted pollination) was 0.36 ± 0.26 (P < 0.001, N = 52 studies). yields plants exposed supplementary were higher than those pollinators under natural open conditions, calculated pollen limitation (PL) 0.20 0.17 20 Fields close semi-natural habitats, wildflowers, grass hedges can more greater diversity fields further away. However, abundance does always lead fruit set. Yield is dependent insect (moderate dependence) limited by availability conditions limitation).KEYWORDS: Bumblebeesfliesflowersfruithoneybeeswild bees AcknowledgementsThe Queensland Government funded research through Department Agriculture Fisheries. Financial support from Florida Strawberry Growers' Association (FSGA) appreciated. Special thanks Pat Abbott, Zalee Bates, Helen Macpherson, Danielle Hoffmann Cheryl Petroeschevsky DAF supplying much literature, Gary Hopewell support.Disclosure statementNo potential conflict interest reported author.Data statementThe author confirms that data findings this study available within materials published online paper reasonable request.Supplemental dataSupplemental article be accessed at https://doi.org/10.1080/14620316.2023.2212670.Additional informationFundingThe work supported Research Education Foundation.

Language: Английский

Citations

6
Plant Species as Potential Forage for Honey Bees in the Al-Baha Mountain Region in Southwestern Saudi Arabia DOI Creative Commons
Ahmad Al-Ghamdi,

Nageeb A. Al‐Sagheer

Plants, Journal Year: 2023, Volume and Issue: 12(6), P. 1402 - 1402

Published: March 22, 2023

The contribution of bee forages in the form nectar, pollen, and propolis to beekeeping development depends on plant species diversity. data concerning increase honey production southwestern Saudi Arabia, which was unexpected with deterioration vegetation cover, becomes a concrete background for this study, planned list contributing as sources propolis. sampling method followed purposive random approach, 20 × m plots were considered total 450 sample plots. Bee forage plants identified based flower morphology bees' actions during floral visits at active foraging hours. A checklist containing 268 belonging 62 families documented. number pollen source (122) more than nectar (92) (10) plants. Regarding seasonal distribution, spring winter relatively good seasons bees terms availability. Generally, study is an essential step towards understanding, conserving, rehabilitating providing forage, Al-Baha Region Arabia.

Language: Английский

Citations

5
You Reap What You Sow: A Botanical and Economic Assessment of Wildflower Seed Mixes Available in Ireland DOI Creative Commons

Claudia Barry,

Simon Hodge

Conservation, Journal Year: 2023, Volume and Issue: 3(1), P. 73 - 86

Published: Jan. 24, 2023

Planting wildflower seed mixes has become popular with individuals and community groups aiming to promote wildlife enhance local biodiversity. Recently, however, these have been criticized respect the origin of seeds species they contain. There is a growing awareness that unintended planting exotic may disrupt native ecological networks, introduce aggressive weeds, or facilitate establishment invasive in new localities. In this study, we purchased two packets twelve brands available Ireland from stores online suppliers. total, 24 contained 69,409 weighing 304 g, represented 92 plant 23 families. Only 25% originated Ireland, only 43% identified are considered Ireland. To reinforce point, most frequent species, Phacelia tanacetifolia, which occurred nine brands, not Irish species. Multivariate analysis no obvious grouping based on their intended target group (e.g., bees, butterflies, wildlife), might be expected had manufacturers followed scientific guidance describing plants preferred by pollinator group. The creation patches diverse floral habitats gardens urban settings can significantly benefit human wellbeing. Our results, need for caution before using attempts restore recreate natural semi-natural communities.

Language: Английский

Citations

4
Exposure to sublethal concentration of flupyradifurone alters sexual behavior and cuticular hydrocarbon profile in Heriades truncorum, an oligolectic solitary bee DOI Creative Commons
Samuel Boff, Manfred Ayasse

Insect Science, Journal Year: 2023, Volume and Issue: 31(3), P. 859 - 869

Published: Aug. 21, 2023

Abstract The aboveground oligolectic bee, Heriades truncorum , is a particularly good model for studying the impact of pesticides on sexual communication, since some aspects its mating behavior have previously been described. We tested (1) interference pesticide flupyradifurone male precopulatory and partner preferences, (2) way that interferes in quality assessment by female, (3) effects chemical compounds female cuticle. exposed bees both sexes to sublethal concentration flupyradifurone. Various behaviors were registered arena with two females (one unexposed one exposed) (either or exposed). Unexposed males quicker attempt mate. Treatment also impacted females. Males approached more quickly than insecticide‐exposed ones. Females insecticide produced lower amounts cuticular hydrocarbons (sex pheromone candidates) appeared less choosy Our findings suggest exposure affects playing role preference female.

Language: Английский

Citations

4
Bee-diverse habitats positively affect seed set in wild plant species DOI Creative Commons
Kim C. Heuel, Manfred Ayasse, Hannah Burger

et al.

Frontiers in Ecology and Evolution, Journal Year: 2024, Volume and Issue: 12

Published: Feb. 6, 2024

Introduction Interactions between flowering plants and visiting wild bees are crucial for ensuring pollination subsequent plant reproductive success. However, bee diversity in an area has rarely been recorded relation to seed set native plants. In this project, we investigated the effect of local communities on four common species. Methods Potted Centaurea jacea , Cichorium intybus Sinapi s arvensis Salvia pratensis were placed experiments, two distinct habitat types that expected show communities, namely near-natural grassland perennial flower strips, Germany. Results Our results showed had a higher species richness increased compared with strips displayed abundance most study locations. Although found effects set, did not detect significant abundance. Furthermore, response differed across Discussion We conclude bee-friendly habitats ensure high plants, but impact varies different

Language: Английский

Citations

1
Assessing important floral resources supporting two species of Exomalopsis (Apidae) in agricultural cultivation areas: insights from pollen load analysis DOI
Jéssica Morais Cunha, Vanessa Ribeiro Matos, Rosana Rodrigues

et al.

Arthropod-Plant Interactions, Journal Year: 2024, Volume and Issue: 18(3), P. 439 - 453

Published: April 1, 2024

Language: Английский

Citations

1
Agricultural practices in olive groves modify weeds floral traits and resources throughout the year DOI
Léa Genty, Aurélie Metay, Elena Kazakou

et al.

Agriculture Ecosystems & Environment, Journal Year: 2024, Volume and Issue: 377, P. 109280 - 109280

Published: Sept. 3, 2024

Language: Английский

Citations

1
Nectar and pollen in Acer trees can contribute to improvement of food resources for pollinators DOI Creative Commons
Ewelina Chrzanowska, Bożena Denisow, Monika Strzałkowska-Abramek

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Nov. 12, 2024

In the present study, we quantified floral resources (nectar and pollen production) their quality sugar composition, protein content, amino acid composition) in five Acer species (f. Sapindaceae) growing forests commonly planted urban areas temperate zone. trees provide high amounts of sugars and/or pollen. No nectar was produced by A. negundo flowers. The other functionally female composed sucrose, glucose, fructose classified as hexose-rich or sucrose-rich. all contained essential acids. should be for improvement cost-effective food various landscape types (agroforestry, areas), with exception (an invasive no available). However, maple alone are not sufficient to support pollinators, plant flowering before after spp. ensure a continued supply pollinators.

Language: Английский

Citations

1